Flexible polymers in a nematic medium : ultrasonic measurements

P. Martinoty , A. Dubault , C. Casagrande , M. Veyssié

Using a shear wave reflectance technique, two viscosity coefficients in solutions of flexible polymers in a nematic solvent were measured. A large increase in the viscosities was observed when the chains were solubilized in the nematic solvent even at very low concentration. The variation of this effect as a function of the temperature shows the existence of two different situations for the polymer chains. The results are consistent with the theoretical expectations of Brochard.

Mots clés: polymer solutions; ultrasonic reflection; viscosity of liquids; ultrasonic measurements; shear wave reflectance technique; viscosity coefficients; flexible polymers; nematic solvent; polymer chains

Domaines: Articles anciens

P. Martinoty, A. Dubault, C. Casagrande, M. Veyssié. Flexible polymers in a nematic medium : ultrasonic measurements. Journal de Physique Lettres, 1983, 44 (23), pp.935-945. ⟨10.1051/jphyslet:019830044023093500⟩. ⟨jpa-00232285⟩